Mercury/Mariner 3.0 MPI ECT User Manual

© 2013 Mercury Marine
3.0 MPI ECT and 3.0 TKS Sterndrive Models
*8M0074347*
90-8M0074347 1012
NOTE: The following applies to CE‑marked products only.
Declaration of Conformity—Mercury MerCruiser
This sterndrive or inboard engine when installed in accordance to Mercury MerCruiser’s instructions complies with the
requirements of the following directives by meeting the associated standards, as amended:
Recreational Craft Propulsion Engines with the Requirements of Directive 94/25/EC as amended by 2003/44/EC
Name of engine manufacturer: Mercury Marine
Address: W6250 W. Pioneer Road, P.O. Box 1939
Town: Fond du Lac, WI Post Code: 54936‑1939 Country: USA
Name of Authorized Representative: Brunswick Marine in EMEA Inc.
Address: Parc Industriel de Petit‑Rechain
Town: Verviers Post Code: 4800 Country: Belgium
Name of Notified Body for exhaust emission assessment: Det Norske Veritas AS
Address: Veritasveien 1
Town: Hovik Post Code: 1322 Country: Norway ID Number: 0575
Conformity assessment module used for exhaust emissions:
☐ B+C ☐ B+D ☐ B+E ☐ B+F ☐ G ☒ H
Conformity assessment module used for noise emissions:
A ☐ Aa ☐ G ☐ H ☒
Other Community Directives applied: Electromagnetic Compatibility Directive 2004/108/EC
Description of Engines and Essential Requirements
Engine Type
Fuel Type Combustion Cycle
☒ z or sterndrive with integral exhaust ☒ Petrol ☒ 4 stroke
Identification of Engines Covered by This Declaration of Conformity
Name of engine family:
Unique engine identification number: starting serial
number
EC Module H certificate number:
Vazer 100 1A035000 RCD‑H‑1
Vazer 100 ECT 1A035000 RCD‑H‑1
3.0 TKS 0W319169 RCD‑H‑1
3.0 MPI ECT 1A300000 RCD‑H‑1
4.3 TKS 0W319169 RCD‑H‑1
4.3 MPI 0W319169 RCD‑H‑1
4.3 MPI ECT 1A300000 RCD‑H‑1
SeaCore 4.3 0W319169 RCD‑H‑1
5.0 MPI 0W319169 RCD‑H‑1
SeaCore 5.0 0W319169 RCD‑H‑1
5.0 MPI ECT 1A300000 RCD‑H‑1
SeaCore 5.0 ECT 1A300000 RCD‑H‑1
350 MAG 0W319169 RCD‑H‑1
SeaCore 350 MAG 0W319169 RCD‑H‑1
350 MAG ECT 1A300000 RCD‑H‑1
SeaCore 350 MAG ECT 1A300000 RCD‑H‑1
377 MAG 0W319169 RCD‑H‑1
SeaCore 377 MAG 0W319169 RCD‑H‑1

Mercury/Mariner 3.0 MPI ECT Specifications

General

Brand	Mercury/Mariner
Model	3.0 MPI ECT
Category	Engine
Language	English

Summary

Section 1 - Warranty

Mercury MerCruiser Limited Warranty (Gasoline‑Fueled Products Only)

Outlines coverage, duration, transfer, termination, and conditions for gasoline-fueled engines.

3‑Year Limited Warranty Against Corrosion

Emission Control Warranty Information

U.S. EPA Emissions Limited Warranty

Section 2 - Getting to Know Your Power Package

Lanyard Stop Switch Safety

Power Trim Operation

Electrical System Overload Protection

Explains fuses and circuit breakers for protecting the engine's electrical systems.

Engine Warning Systems

Describes audio and visual warning systems for caution and severe fault conditions.

Section 3 - On the Water

Safe Boating Practices

Provides essential suggestions for safe boating, including passenger safety and equipment.

Carbon Monoxide Awareness

Highlights risks of carbon monoxide exposure and necessary ventilation precautions.

Boat Operation Procedures

Operational Hazards and Precautions

Engine Break-In Procedures

Details the critical 20-hour break-in period and post-break-in recommendations.

Section 4 - Specifications

Engine Specifications

Lists detailed engine specifications for 3.0 MPI ECT and 3.0 TKS models.

Fuel Requirements and Ratings

Specifies acceptable gasoline types, octane ratings, and alcohol content.

Engine Oil Recommendations

Provides recommended engine oils and lubrication guidelines for optimal performance.

Section 5 - Maintenance

Engine and Fluid Maintenance

Guides on checking, filling, and changing engine oil, coolant, steering fluid, gear lube, and trim fluid.

Component Service Procedures

Corrosion Protection and Flushing

Section 6 - Storage

Storage Preparation Procedures

Steps for preparing the power package for extended storage, including fuel and cooling systems.

Cooling System Draining

Section 7 - Troubleshooting

MPI ECT Troubleshooting Guide

Covers EFI issues, Guardian system, starting, running, and performance problems for 3.0 MPI ECT.

3.0 TKS Troubleshooting Guide

Addresses starting, running, and performance issues specific to the 3.0 TKS engine.

Common Troubleshooting Issues